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mm, cma: prevent nr_isolated_* counters from going negative
[deliverable/linux.git]
/
mm
/
compaction.c
diff --git
a/mm/compaction.c
b/mm/compaction.c
index ccf97b02b85f32d38f6f68a41bedf89b9a1ee596..4a0d4b8ccde8a60c502200f7eeb8a2f521382ef1 100644
(file)
--- a/
mm/compaction.c
+++ b/
mm/compaction.c
@@
-852,16
+852,8
@@
isolate_migratepages_range(struct compact_control *cc, unsigned long start_pfn,
pfn = isolate_migratepages_block(cc, pfn, block_end_pfn,
ISOLATE_UNEVICTABLE);
pfn = isolate_migratepages_block(cc, pfn, block_end_pfn,
ISOLATE_UNEVICTABLE);
- /*
- * In case of fatal failure, release everything that might
- * have been isolated in the previous iteration, and signal
- * the failure back to caller.
- */
- if (!pfn) {
- putback_movable_pages(&cc->migratepages);
- cc->nr_migratepages = 0;
+ if (!pfn)
break;
break;
- }
if (cc->nr_migratepages == COMPACT_CLUSTER_MAX)
break;
if (cc->nr_migratepages == COMPACT_CLUSTER_MAX)
break;
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